Sliding scale device for medical diagnostic purposes



FIG. 1 is a top, front, right perspective view of a sliding scale device for medical diagnostic purposes showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is an end elevational view thereof;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a perspective view thereof with parts separated. 

The ornamental design for a sliding scale device for medical diagnostic purposes, substantially as shown and described. 